From 8d2e77b39b8fecb794e19cd006a12f90b14dd077 Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Wed, 4 Dec 2019 04:35:25 +0100
Subject: [PATCH] HID: alps: Fix an error handling path in 'alps_input_configured()'
Git-commit: 8d2e77b39b8fecb794e19cd006a12f90b14dd077
Patch-mainline: v5.6-rc4
References: git-fixes
They are issues:
- if 'input_allocate_device()' fails and return NULL, there is no need
to free anything and 'input_free_device()' call is a no-op. It can
be axed.
- 'ret' is known to be 0 at this point, so we must set it to a
meaningful value before returning
Fixes: 2562756dde55 ("HID: add Alps I2C HID Touchpad-Stick support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/hid/hid-alps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c
index ae79a7c66737..fa704153cb00 100644
--- a/drivers/hid/hid-alps.c
+++ b/drivers/hid/hid-alps.c
@@ -730,7 +730,7 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
if (data->has_sp) {
input2 = input_allocate_device();
if (!input2) {
- input_free_device(input2);
+ ret = -ENOMEM;
goto exit;
}
--
2.16.4